JJ hand that I would like some help with.

[Bonafone]

Hey, help on all streets would be appreciated, but mostly the play on the river. I feel bad about the bet on the end, but I would like to hear what others have to say.

***** Hand History for Game 1675546794 *****
NL Hold'em $10 Buy-in + $1 Entry Fee Trny:10045269 Level:1 Blinds(10/15) - Wednesday, March 02, 21:47:10 EDT 2005
Table Table 11569 (Real Money)
Seat 5 is the button
Total number of players : 10
Seat 1: Blackmagic65 ( $785 )
Seat 2: NAgnello ( $785 )
Seat 3: Slawko1 ( $870 )
Seat 4: jonny4487 ( $755 )
Seat 5: The_Goldman ( $770 )
Seat 6: anthdam ( $905 )
Seat 7: jimmytango0O ( $800 )
Seat 8: sam0128 ( $800 )
Seat 9: derlyt75 ( $730 )
Seat 10: Hero ( $800 )
Trny:10045269 Level:1
Blinds(10/15)
** Dealing down cards **
Dealt to XBonafoneX [ Jc Jh ]
sam0128 folds.
derlyt75 folds.
Hero calls [15].
Blackmagic65 calls [15].
NAgnello folds.
Slawko1 folds.
jonny4487 folds.
The_Goldman calls [15].
anthdam calls [5].
jimmytango0O checks.
** Dealing Flop ** [ 7c, Tc, 2c ]
>You have options at Table 11595 Table!.
anthdam checks.
jimmytango0O checks.
>You have options at Table 11885 Table!.
Hero bets [50].
Blackmagic65 calls [50].
The_Goldman folds.
anthdam calls [50].
jimmytango0O folds.
** Dealing Turn ** [ 5s ]
anthdam checks.
Hero [100].
Blackmagic65 calls [100].
anthdam folds.
** Dealing River ** [ Jd ]
Hero bets [200].
>You have options at Table 11595 Table!.
Blackmagic65 raises [400].
Hero calls [200].
Blackmagic65 shows [ Kc, 5c ] a flush, king high.
Hero shows [ Jc, Jh ] three of a kind, jacks.
Blackmagic65 wins 1225 chips from the main pot with a flush, king high.